Question

Question 15
The velocity of sound at 20°C is approximately
(a) 3400 m/sec
(b) 340 m/sec
(c) 430 m/sec
(d) 304 m/sec
→ Answer​

Answer 1

Answer:

(b)340m/s

Explanation:

In air at 20⁰C., Velocity of sound is approx. 343m/s..

U can Choose option (b)340m/s

Exacty 340m/s is when the temperature is 15⁰C.